I have not read the bill, so I honestly do not know what it is. However, if is an effective ban on porn I would be against it, no matter what the intended benefit is. I do not think the govt should be in the business of mandating morality in the vast majority of cases. If there was a way to keep access strictly from minors by snapping your fingers, I would be for it. Not at he cost of freedom(of speech) no matter how distasteful, however. I am not a ends justifies the means guy for the most part. There are costs/downsides to freedom/liberty, that we just have to accept. This is one of them, imo. I think there is little question that porn has an overall negative impact on society, if that were to be measured somehow. No question it leads to child molestation, rape, and likely some homicides. So, it is not a easy thing to say you don't want to stop something that would reduce instances of those things.
I believe marriage is between one man and one woman. However, this is a religious belief, not a political one. Imo, if you want to marry two men, three women, one of your sisters, two of you uncles, and the family dog, the govt has no business telling you you can not. They also do not have any business telling me I have to think it ok or support it.